12216475116485 has 4 divisors (see below), whose sum is σ = 14659770139788. Its totient is φ = 9773180093184.

The previous prime is 12216475116467. The next prime is 12216475116509. The reversal of 12216475116485 is 58461157461221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7614939592324 + 4601535524161 = 2759518^2 + 2145119^2 .

It is a cyclic number.

It is not a de Polignac number, because 12216475116485 - 2¹⁴ = 12216475100101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221647511644 + ... + 1221647511653.

It is an arithmetic number, because the mean of its divisors is an integer number (3664942534947).

Almost surely, 2^{12216475116485} is an apocalyptic number.

It is an amenable number.

12216475116485 is a deficient number, since it is larger than the sum of its proper divisors (2443295023303).

12216475116485 is an equidigital number, since it uses as much as digits as its factorization.

12216475116485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443295023302.

The product of its digits is 3225600, while the sum is 53.

The spelling of 12216475116485 in words is "twelve trillion, two hundred sixteen billion, four hundred seventy-five million, one hundred sixteen thousand, four hundred eighty-five".